The correct answer is D. are K-selected
Explanation:
In biology, the term k-selected is used to describe species in which there is high parental investment, but a low quantity of offspring. This implies in these species organisms have less offspring but invest in each new organism to guarantee survival. This reproductive strategy is the opposite of r-selected in which there is a high rate of offspring but little parental investment, this causes some individuals to survive while others die.
In the case of primates, they are k-selected because most of the species in primates including apes, gorillas, and humans have only one or two offspring each time, also, the parental investment is higher as offspring stays with parents for a longer time; at the same time, this keeps the population stable as higher parental investment guarantees most offspring survives. Thus, the primates' reproductive strategies are K-selected.
